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Biomedical subjects

G Re

Publications and source records attributed to G Re.

At least 109 records · Page 6Linked to original sources
PubMed1980

[Mechanical properties of the human basilar artery].

The mechanical properties of the wall of human basilar artery have been determined by tension tests. The degree of orientation of collagen fibers inside the deformed arterial wall has been evaluated by the analysis of the mechanical results and by the X-ray diffraction pattern. The results show that the wall of the muscular arteries can be considered a "composite material" which mechanical properties, at high stress, are due mainly to the collagen fibers orientation.

Basilar Artery↗
PubMed1980

[Role of the orientation of the collagen fibers on the mechanical properties of the carotid wall].

Mechanical test was applied to several carotid walls air-dried under different degree of deformation along the circumferential direction. The stress-strain curves show an increase of the elastic modulus as a function of the deformation. X-ray diffraction studies were applied to determine the degree of collagen orientation in the deformed samples. The carotid wall, in agreement with the "composite materials theory", shows that the collagen is the most responsible factor of the mechanical properties of the tissue.

Animals↗
PubMed1980

[Collagen fiber orientation in the tunica media of the aorta as a function of intraluminal pressure].

X-ray diffraction investigation and hystological analysis have been carried out on segments of pig's aortic media layer under different values of distending pressure. The roentgenografic study shows that collagen fibers aligne themselves along the circumferential direction of the vessel as a function of the intraluminal pressure and are completely oriented at systolic pressure. Hystological analysis reveales that the smooth cells orientation, as a function of intraluminal pressure, is very close to that of collagen fibers.

Animals↗
PubMed1980

[Roentgenographic study of the structural organization of the collagen fibers in the tunica media of the aorta].

X-ray diffraction tecnique was used to investigate the distribution and orientation of collagen fibers in media layer of pig aortic wall as a function of mechanical deformation. Hyistological analyses were carried out to study the behavior of smooth cells when mechanical deformation is applied to media layer. The results show a close relationship between collagen fibers and smooth cells orientation.

Animals↗